United Soils Inc. suggests following the provided guide below when obtaining plant tissue samples for analysis. Results of the analysis will determine whether problems in plant development are due to nutritional factors. Precise results are possible only when carefully selected plant material is submitted for analysis. Accurate sampling requires that select parts of a plant are collected at certain stages of plant development. A plant’s nutritional condition differs for each variety, stage of development and growing area. It is recommended to select plant tissue representative of a particular variety and growing area. Place samples in un-lined paper bags.

What Not to Sample: Diseased or dead plant material; plant tissue damaged by insects and/or mechanical equipment; plant tissue which has been stressed by excesses of cold, heat or moisture; seeds should NOT be sampled as they do not reflect nutritional status of the whole plant.